Subgrading machine



C. J. HUG.

SUBGRADING MACHINE.

APPLICATION FILED OCT. 16. 1920.

Patented June 27, 1922.

2 SHEETS-SHEET 1- C. J. HUG.

SUBGRADING MACHINE.

APPUCATION FILED OCT. I6, 1920.

Patented June 27, 1922.

2 SHEETS-SHEET 2.

g a BY ATTORN'Y CHRISTIAN J. HUG, OF HIGHLAND, ILLINOIS.

. SUBGRADING MACHINE.

Mamet.

Specification of Letters Patent. Patented, June 27, 1922.

Application filed October 16, 1920. Serial No. 417,367.

, State of Illinois, have invented certain new and useful Improvements in Subgrading Machines, of which the following is a specification, reference being had therein to the accompanying drawing. 2

My invention relates to improvements in sub-grading machines and has for its object to provide a grading and levelling machine particularly adapted to that form of street making and road-making wherein side curbs or mold-members are employed to serve as forms for the parallel outer edges of the road-bed. My machine is intended to rest and travel upon the top surfaces of said curbs when operating, and to travel, when not operating, upon wheels which are arranged to be normally held above the plane of the points upon which the machine rests when operating, said wheels being depressed beneath the level of said plane, to carry the weight of the machine when'it is desired to transport the same in inoperative condition.

In the drawings- Fig. 1 is a top plan view of a machine embodying my invention.

Fig. 2 is a front elevation of the same in operative position upon the curbs.

Fig. 3 is an end view thereof in inoperative position, the weight of the machine resting uponthe wheels.

Fig. 4 is an enlarged detail of the roller shaft bearing.

Fig. 5 is a vertical cross-section of the grader-blade in place upon its angle carrier.

In the drawings the curbs or side-forms are indicated as'66, and are of channel form. The longitudinal beams 77 are spaced apart by the transverse spacer blocks 8 and tie rods 9, the latter having draft eyes 10 to which trace chains or other tractorconnecting means are attached. The rollers 11 rest on the curbs 6 and carry the weight of the machine when the machine is in operative position and are mounted on the shafts 12, the inner ends of the shafts 12 being pivotally secured in the bearings 13. Toward their outer ends the shafts 12 are held against horizontal movement by straps 13-, and their vertical adjustmentis secured by the depth adjusting pins 14, the straps 13' and the beam 7 to which said straps 13' are secured being perforated at suitable adjusting points to receive said pins 14 (see Figs. 2 and 4).

Guide rollers 15 are mounted in operative relation to the rollers 11 as shown in Fig. 2 to contact with the inner faces of the curbs 6. The angles 16 are secured to the beams 7 by bolts 17 and blades 18 are secured to the angles 16 by bolts 19 as detailed in Fig. 5.

To the outer beams 7 axle-bearings 20 are attached carrying the double goose-neck axle or crank-axle composed of the parts21, 22 and 23;. the outer axle-ends 23 carrying the wheels 24. The tongue 25 has its inner end secured to the middle of the axle-part 20 (see Fig. 3) and the axle-necks 22 are attached to .said tongue 25 by the hounds 26-26. raised position, the wheels 24 will be elevated as shown in Fig. 2; the tongue 25 being thrown to the position indicated by dotted lines'in Fig. 2 the wheels 24 will be depressed beneath the' level of the bottom of the machine, -;as shown in Fig. 3, and the tongue 25 will be held in said position by the hook 27, so that the machine maybe transported by tractive means attached to said tongue 25.

The various angles 16 and blades 18 carried thereby may be grouped as desired for the specific work to be performed, though their preferred arrangement is shown in Fig. 1; they are alwaysto be set at an angle to the path of travel-of the machine, and are adjustable upon the beams 7.

In the construction described, as illustrated in Fig. 2, a single movement of the tongue 25 from left to right will serve to transfer the weight of the machine from the rollers 11 to the wheels 24 for the purposes of transportation.

Having described my invention what I claim is 1. In a sub-grading machine the combination of a frame; grading blades carried by said frame; rollers supporting the frame when in operative position: a crank-axle j ournaled transversely on said frame; wheels mounted on said crank-axle; and a ton e secured to said crank-axle and arrange to transfer the weight of the frame to said wheels for the purpose of transporting the machine when not in operative position.

2. In a sub-grading machine the combination of a frame; grading blades carried by said frame; rollers supporting the frame lVhen the axle-necks 22 are in I when in operative position; guide-rollers carried by the frame-in operative relation to said first-named rollers; a crank-axle journalled transversely on said frame; wheels mounted on said crank-axle, and a tongue seeured to said crank-axle and arranged to transfer the weight of the frame to said tion of a frame; grading blades carried by said frame; rollers supportingthe frame 'When in operative position; a crank-axle j ournaled transversely on said frame; Wheels mounted on said crank-axle; and means for actuating said crank-axle to transfer the Weight of the frame from the rollers to said Wheels.

In testimony whereof I hereunto alfix my signature.

CHRISTIAN J. HUG.- 

